Rolling-mill.



Patented May 7, l90l,

c, MERGADEB. ROLLING MILL.

{Application filed June 14, 1900) 2 Shasta-Shoat I.

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C. MERCADER.

ROLLING MILL.

(Application filed June 14. 1900.) (Nu llod'el.) 2 Sheets$haat 2.

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UNITED STATES 'ATENT FFICE.

OAMILLE MEROADER, OF BRADDOOK, PENNSYLVANIA.

ROLLING-MILL.

SPECIFICATION forming part of Letters Patent No. 673,440, dated May 7, 1901.

Application filed June 14, 1900. Serial No. 20,290. (No model.)

To (all whom itvnay concern.-

Be it known that I, CAMILLE MERCADER, of

Braddock, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Rolling-Mills, of which the following is a full, clear, and exact description, reference beinghad to the accompanying drawings, forming part of this specification, in which Figure l is a side elevation showing the roughing portion of myimproved rolling-mill, and Fig. 2 is a similar View showing the finishing portion of the mill.

My invention relates to the rolling of skelp or similar material, which is rolled of different sizes in grooved rolls, and is designed to cheapen and improve the manufacture of such material and reduce the number of rolls necessary for rolling different sizes. Heretofore in rolling material of this class a continuous mill has been used composed of several sets of rolls in tandem, all having grooves to form the working passes, and in changing the size of the strips or bars it was necessary to change the rolls in each stand throughout the mill. This necessitated keeping in stock a large number of rolls and caused long delays in removing and replacing the rolls. Moreover, the metal must issue from the last rolls at a higher speed than is desirable in practice. My invention largely overcomes this difficulty; and it consists in using one or more sets of plain roughing rolls without grooves in combination with a universal mill, through which the metal passes from the said set or sets of roughing-rolls.

It further consists in separating a continuous mill into two parts, with a driven feedtable between, and using the universal mill between the two sets.

In the drawings, in which both figures con.- stitute one continuous side elevationofa mill constructed in accordance with my invention, 2, 3, and 4 represent sets of roughing-rolls arranged in tandem, the rolls being plain-faced and without grooves.

5 is a universal mill, which may be of the usual type, being provided with vertical rolls which are adjustable toward and from each other to vary the width of the pass between them. From the universal mill the material passes upon a power-driven feed-table 6, by

which it is conveyed to the finishing portion of the mill, which may consist of four sets of grooved rolls 7, 8, 9, and 10, arrangedin tandem in the usual manner. These sets of rolls act as'a continous mill, the material entering one set of the rolls before it leaves the previous set and passing over the intermediate supports or tables 11. Between-the various sets of rolls of the roughing-train-I employ feed-tables 12, which are preferably power driven, as the material at this point may be shorter than the distance between the rolls.

13 is the usual power-driven feed-table leading to the first set of rolls 2.

In the operation of the mill the material passing over the table 13 passes successively through the sets of rolls 2, 3, and 4 and is thus gradually reduced in thickness. Thence it passes through the universal mill 5 and is thereby reduced both in thickness and width and brought to the desired size to form the strip or bar for which the finishing-mill is adapted. From the universal mill the material passes to the intermediate table 6, from which it is delivered when desired to the finishing-mill and passes through the successive grooves in the sets of rolls therein and is received upon the discharge-table 14. 'When it is desired to reduce a strip or bar of a different size or shape, the rolls of the finishingmill are replaced by others having grooves arranged to form the new section, and the universal mill is adjusted so as to properly shape the metal for entrance to the finishing-train, the sets of rolls in the roughing-train being adjusted vertically as desired.

The advantages of my invention will be apparent to those skilled in the art, since by doing away with the necessity for changing the roughing-rolls I greatly reduce the number of rolls necessary for producing different shapes and sizes of skelp or other material and shorten the time necessary for changing the rolls. By separating the mill intotwo parts and placing the driven feed-table between I reduce the speed at which the piece passes through the latter sets of rolls, as could not be done with the rolls all arranged in one continuous train.

Many changes may be made in the form and arrangement of the difierent rolls as well as in the number and arrangement of the sets of rolls and the material produced without departing from my invention.

I claim 1. A rolling-mill containing a set of plainfaced rolls, a universal mill arranged to receive the metal from said set of rolls, and a set of grooved rolls arranged to receive the metal from the universal mill; substantially as described.

2. In a rolling-mill, a roughing-train having plain-faced rolls,a universal mill arranged in tandem therewith, and a set of grooved rolls arranged in tandem with the universal mill; substantially as described.

3. In a rolling-mill, a set of roughing-rolls,

a universal mill arranged in tandem therewith, a table receiving the metal from the' universal mill, and a finishing-train having grooved rolls to which said table leads; sub stantially as described.

4. In a rolling-mill, a series of sets of plainfaced rolls arranged in tandem, a universal mill also arranged in tandem therewith, a power-driven feed-table arranged to receive the metal from the universal mill, and a finishing-mill having sets of grooved rolls arranged in tandem and arranged to receive the metal from said table; substantially as de-' scribed.

In testimony whereof I have hereunto set my hand.

OAMILLE MEROADER;

Witnesses:

GEO. B. BLEMING, H. M. OORWIN. 

